Power system, server, and power control method

Abstract

To improve accuracy in authentication of a chargeable or dischargeable vehicle.SOLUTION: A power system 100 comprises a CEMS server 2, at least one power device 17, and at least one vehicle 18. The power device 17 charges the vehicle 18 in a first charging pattern. The vehicle 18 transmits a charge power value obtained by the power device 17 to the CEMS server. The server pairs a target power device charged in the first charging pattern with a target vehicle that transmits a second charging pattern, when the first charging pattern coincides with the second charging pattern obtained based on the charge power value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a power system, a server, and a method for controlling power. [Background technology]

[0002] For example, Patent Document 1 (JP 2019-198156 A) discloses a charging system comprising a charging station, a vehicle, and a server. In this charging system, the charging station charges the vehicle. In this charging system, the charging station compares a charging current value transmitted from the vehicle to the server with a charging current value supplied from the charging station to authenticate the vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-198156 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described charging system, vehicle authentication is performed using the battery charge rate. Therefore, the battery charge rate of a vehicle that should not actually be authenticated may coincide with the battery charge rate of a vehicle that should actually be authenticated. In this case, authentication of a vehicle that should not actually be authenticated may be successful, resulting in low authentication accuracy.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to improve the accuracy of authentication of vehicles that can be charged or discharged. [Means for solving the problem]

[0006] The power system of the present disclosure includes a server, at least one power device, and at least one vehicle. The power device charges the vehicle using a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed. When the first charging pattern matches a second charging pattern, which is a power pattern in which the vehicle is charged and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, the server pairs a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern.

[0007] According to this configuration, when the first charging pattern of the first power device, which indicates the charging power value from the start of charging until the elapse of a predetermined period of time, matches the second charging pattern of the vehicle, which indicates the charging power value from the start of charging until the elapse of a predetermined period of time, the target power device and the target vehicle are paired. Therefore, compared to a configuration in which the vehicle is authenticated using the charging rate at a specific time point, the accuracy of vehicle authentication can be improved.

[0008] The power device also transmits a first charging pattern specific to the power device to the server, and when the first charging pattern transmitted from the power device matches the second charging pattern transmitted from the vehicle, the server designates the power device as a target power device and pairs the vehicle as a target vehicle.

[0009] With this configuration, it is possible to omit the process of the server generating the first charging pattern.

[0010] Furthermore, when starting charging by the power device, the server generates a first charging pattern different from the first charging pattern being used and transmits the first charging pattern to the power device. The power device charges the vehicle using the first charging pattern transmitted by the server. If the second charging pattern matches the first charging pattern transmitted to the power device, the server pairs the target power device with the target vehicle, and after pairing the target power device with the target vehicle, erases the generated first charging pattern.

[0011] With this configuration, the server erases the first charging pattern after pairing the target power device and the target vehicle, thereby preventing the number of first charging patterns from increasing excessively.

[0012] The power system further includes a load that consumes power. The server controls the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases.

[0013] With this configuration, it is possible to prevent the load from running out of power. The server also identifies a non-target power device to be charged using a first charging pattern that does not match the second charging pattern, and controls the non-target power device so that the amount of chargeable power by the non-target power device does not change depending on the amount of required power.

[0014] With this configuration, even if a non-target vehicle that does not transmit the second charging pattern is charged by the power device, the non-target vehicle can still be charged.

[0015] In addition, the server acquires the chargeable energy of the target power device, and the target vehicle or the target power device transmits the chargeable energy of the target vehicle to the server, and the server determines the amount of charging energy based on the chargeable energy of the target power device and the chargeable energy of the target vehicle, and transmits information indicating the charging energy to the target power device and the target vehicle.

[0016] With this configuration, even if communication between the target vehicle and the target power device is not possible, the server can make the target power device and the target vehicle aware of the amount of charging power, which becomes smaller as the amount of power required by the load increases.

[0017] The at least one power device includes a plurality of power devices. The at least one vehicle includes a plurality of vehicles. The plurality of power devices each charge the vehicle using a different one of the plurality of first charging patterns. The plurality of vehicles are each charged using a different one of the plurality of second charging patterns. The server pairs the target power device charged using the first charging pattern with the target vehicle charged using the second charging pattern, with the second charging pattern corresponding to each of the plurality of first charging patterns.

[0018] With this configuration, it is possible to perform pairing of a plurality of combinations of a plurality of target vehicles and a plurality of target power devices.

[0019] The power system of the present disclosure includes a server, at least one power device, and at least one vehicle. The vehicle discharges power to the power device according to a first discharging pattern, which is a power pattern for the vehicle to discharge and indicates a discharge power value from the start of discharge until a predetermined period has elapsed. If the first discharging pattern matches a second discharging pattern, which is a power pattern for the power device to be supplied with power and indicates a discharge power value from the start of discharge by the vehicle until a predetermined period has elapsed, the server pairs a target vehicle that discharged power according to the first discharging pattern with a target power device that discharged power according to the second discharging pattern.

[0020] According to this configuration, when a first discharge pattern of the vehicle indicating the discharge power value from the start of discharge until the lapse of a predetermined period matches a second discharge pattern to the power device indicating the discharge power value from the start of discharge until the lapse of a predetermined period, the target power device and the target vehicle are paired. Therefore, compared to a configuration in which vehicle authentication is performed using the charge rate at a specific time, the accuracy of vehicle authentication can be improved.

[0021] The vehicle also transmits a first discharge pattern specific to the vehicle to the server. When the first discharge pattern transmitted from the vehicle matches the second discharge pattern transmitted from the power device, the server designates the power device as a target power device and pairs the vehicle with the vehicle as a target vehicle.

[0022] With this configuration, it is possible to omit the process of the server generating the first discharge pattern.

[0023] Furthermore, when starting discharging by the vehicle, the server generates a first discharging pattern different from the first discharging pattern being used and transmits the first discharging pattern to the vehicle. The vehicle discharges to the power device using the first discharging pattern transmitted by the server. If the second discharging pattern matches the first discharging pattern transmitted to the vehicle, the server pairs the target power device with the target vehicle, and after pairing the target power device with the target vehicle, erases the generated first discharging pattern.

[0024] According to this configuration, the server erases the first discharge pattern after pairing the target power device and the target vehicle, thereby preventing the number of first discharge patterns from increasing excessively.

[0025] The power system further includes a load that consumes power. The server controls the target vehicle so that the amount of power that can be discharged by the target vehicle increases as the amount of power required by the load increases.

[0026] With this configuration, it is possible to prevent the load from running out of power. The server also identifies non-target vehicles that discharge using a first discharge pattern that does not match the second discharge pattern, and controls the non-target vehicles depending on the required amount of power so that the amount of power that can be discharged by the non-target vehicles does not change.

[0027] With this configuration, even if a discharge occurs to a non-target power device that does not transmit the second discharge pattern, the discharge can still be performed to the non-target power device.

[0028] The server also acquires the amount of dischargeable power to the target power device. The target vehicle or the target power device transmits the amount of dischargeable power of the target vehicle to the server. The server determines the amount of dischargeable power based on the amount of dischargeable power of the target power device and the amount of dischargeable power of the target vehicle, and transmits information indicating the amount of discharged power to the target power device and the target vehicle.

[0029] With this configuration, the amount of discharged power increases as the amount of power required by the load increases, and even if communication between the target vehicle and the target power device is not possible, the server can make the target power device and the target vehicle aware of this amount of discharged power.

[0030] Further, the at least one power device includes a plurality of power devices. The at least one vehicle includes a plurality of vehicles. Each of the plurality of vehicles discharges power to the power device according to a different one of the plurality of first discharge patterns. Each of the plurality of power devices is supplied with power according to a different one of the plurality of second discharge patterns. The server pairs the target vehicle that discharged power according to the first discharge pattern with the target power device that was supplied with power according to the second discharge pattern, for the plurality of second discharge patterns that match each of the plurality of first discharge patterns.

[0031] With this configuration, it is possible to perform pairing of a plurality of combinations of a plurality of target vehicles and a plurality of target power devices.

[0032] The server of the present disclosure includes at least one power device, an interface for communicating with at least one vehicle, and a processor. The power device charges the vehicle using a first charging pattern, which is a power pattern for discharging the power device and indicates a charging power value from the start of charging until a predetermined period has elapsed. When the first charging pattern matches a second charging pattern, which is a power pattern for charging the vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, the processor pairs a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern.

[0033] The server of the present disclosure includes at least one power device, an interface for communicating with at least one vehicle, and a processor. The vehicle discharges power to the power device using a first discharging pattern, which is a power pattern for the vehicle to discharge and indicates a discharge power value from the start of discharge until a predetermined period has elapsed. When the first discharging pattern matches a second discharging pattern, which is a power pattern for the power device to be supplied with power and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, the processor pairs a target vehicle that discharged power using the first discharging pattern with a target power device that discharged power using the second discharging pattern.

[0034] A power control method disclosed herein is a power control method for at least one power device and at least one vehicle, and includes: acquiring a first charging pattern, which is a power pattern for discharging the power device and indicates a charging power value from the start of charging the vehicle by the power device until a predetermined period has elapsed; and, when the first charging pattern matches a second charging pattern, which is a power pattern for charging the vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern.

[0035] A power control method according to the present disclosure is a method for controlling power between at least one power device and at least one vehicle, and includes: acquiring a first discharge pattern, which is a power pattern for discharging power from the vehicle and indicates a discharge power value from the start of discharge to the power device until a predetermined period has elapsed; and, when the first discharge pattern matches a second discharge pattern, which is a power pattern for supplying power to the power device and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing a target vehicle that discharged power according to the first discharge pattern with a target power device that discharged power according to the second discharge pattern. [Effects of the Invention]

[0036] According to the present disclosure, it is possible to improve the accuracy of authentication of vehicles that can be charged or discharged. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a diagram illustrating a schematic configuration of a power system according to the present disclosure. [Figure 2] 1 is a diagram illustrating an example of the configuration of a power device 17 and a vehicle 18 according to the present disclosure. [Figure 3] FIG. 2 is a functional block diagram of a CEMS server and the like in the first embodiment. [Figure 4] FIG. 10 illustrates an example of comparison processing by a processing unit. [Figure 5] 3 is a flowchart of the first embodiment. [Figure 6] 10 is a flowchart of charging EM control. [Figure 7] 10 is a flowchart of a second embodiment. [Figure 8] FIG. 11 is a functional block diagram of a CEMS server and the like according to a third embodiment. [Figure 9] 10 is a flowchart of a third embodiment. [Figure 10] 10 is a flowchart of a discharge EM control process. [Figure 11] 10 is a flowchart of a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0039] First Embodiment [Overall configuration of the management system] 1 is a diagram showing a schematic configuration of a power system according to a first embodiment of the present disclosure. The power system 100 includes a CEMS 1, a CEMS server 2, a power receiving and transforming facility 3, a power grid 4, and a power transmission and distribution company server 5. CEMS stands for Community Energy Management System or City Energy Management System.

[0040] The CEMS 1 includes a factory energy management system (FEMS), a building energy management system (BEMS), a generator 14, a naturally variable power source 15, an energy storage system (ESS) 16, a power device 17, at least one vehicle 18, and a thermal storage system 19. In the CEMS 1, a microgrid MG is constructed by these components. The microgrid MG corresponds to an example of a "power grid" according to the present disclosure. The FEMS and BEMS may be collectively referred to as an "xEMS." The CEMS 1 may also include a home energy management system (HEMS). The at least one vehicle 18 is typically a plurality of vehicles 18.

[0041] The FEMS is a system that manages the supply and demand of electricity used in the factory 11. The FEMS includes the factory 11, at least one power device 17, and an FEMS server 110 that is capable of bidirectional communication with the CEMS server 2. The at least one power device 17 is typically a plurality of power devices 17. The factory 11 also has a load 11A. The load 11A operates using power supplied from the microgrid MG. The load 11A includes, for example, air conditioning equipment, lighting fixtures, and industrial equipment (production lines). Although not shown, the FEMS may also include power generation equipment (generators, solar panels, etc.). Power generated by these power generation equipment may also be supplied to the microgrid MG. The FEMS may also include a cold heat source system (waste heat recovery system, thermal storage system, etc.).

[0042] The power device 17 is a device configured to charge the vehicle 18. The power device 17 may be a home charger. The power device 17 may be electrically connected to the microgrid MG and configured to discharge (feed power) to the microgrid MG.

[0043] Specifically, the vehicle 18 is a plug-in hybrid vehicle (PHV), an electric vehicle (EV), or the like. The vehicle 18 is configured to receive power from the microgrid MG by connecting a charging cable extending from the power device 17 to an inlet (not shown) of the vehicle 18 (external charging). The vehicle 18 may also be configured to discharge power from the power device 17 by connecting a charging cable to an outlet (not shown) of the vehicle 18 (external discharging).

[0044] A BEMS is a system that manages the supply and demand of electricity used in a building such as an office or commercial facility. The BEMS includes a building 12, at least one power device 17, and a BEMS server 120 capable of bidirectional communication with the CEMS server 2. The building 12 also has a load 12A. The load 12A operates using power supplied from the microgrid MG. The load 12A includes, for example, air conditioning equipment and lighting fixtures installed in the building 12. The BEMS may also include a power generation facility and / or a cooling and heating system. In this embodiment, the factory 11 and the building 12 are collectively referred to as a "facility." At least one power device 17 is managed by this facility.

[0045] The generator 14 is a power generation facility that is not dependent on weather conditions and outputs the generated power to the microgrid MG. The generator 14 may include a steam turbine generator, a gas turbine generator, a diesel engine generator, a gas engine generator, a biomass generator, a stationary fuel cell, or the like. The generator 14 may also include a cogeneration system that utilizes heat generated during power generation.

[0046] The naturally variable power source 15 is a power generation facility whose power output fluctuates depending on weather conditions, and outputs the generated power to the microgrid MG. While a solar power generation facility (solar panels) is illustrated in Fig. 1, the naturally variable power source 15 may include a wind power generation facility instead of or in addition to the solar power generation facility.

[0047] The power storage system 16 is a stationary power storage device that stores power generated by the naturally variable power source 15 or the like. This power storage device is a secondary battery such as a lithium-ion battery or a nickel-metal hydride battery, and for example, a traction battery (recycled product) that was previously installed in a vehicle can be used. However, the power storage system 16 is not limited to a secondary battery, and may also be a power-to-gas device that produces gaseous fuel (hydrogen, methane, etc.) using surplus power.

[0048] In this embodiment, in the example of FIG. 1, a factory of the FEMS has at least one power device 17, and a building of the BEMS has at least one power device 17.

[0049] storage The thermal system 19 includes a heat storage tank provided between the heat source machine and the load (air conditioning equipment, etc.), and is configured to temporarily store the liquid medium in the heat storage tank in a warm state. By using the heat storage system 19, it is possible to stagger the generation and consumption of heat. For example, it is possible to store the heat generated by consuming electricity to operate the heat source machine at night in the heat storage tank, and then consume that heat during the day for air conditioning.

[0050] In the example shown in FIG. 1 , the CEMS 1 includes one each of the FEMS, BEMS, generator 14, naturally variable power source 15, power storage system 16, power device 17, vehicle 18, and thermal storage system 19, but the number of these systems or facilities included is arbitrary. The CEMS 1 may include multiple of these systems or facilities, or there may be systems or facilities not included in the CEMS 1. The FEMS or BEMS may include facilities such as a generator, or may include power devices and vehicles. Each of these systems or facilities may be referred to as a "power regulation resource" according to the present disclosure.

[0051] The CEMS server 2 is a computer that manages power adjustment resources within the CEMS 1. The CEMS server 2 includes a control device 201, a storage device 202, and a communication device 203. The control device 201 includes a processor and is configured to execute predetermined arithmetic processing. The processor is also called a "control circuit." The storage device 202 includes a memory that stores programs executed by the control device 201 and stores various information used by the programs (maps, relational expressions, parameters, etc.). The storage device 202 also includes a database that stores data related to the power of systems or facilities included in the CEMS 1 (power generation history, power consumption history, etc.). The communication device 203 includes a communication interface and is configured to communicate with external devices (other servers, etc.).

[0052] Furthermore, each of the vehicles 18 included in the power system 100 is assigned a vehicle ID (identification). The vehicle ID is information for identifying the vehicle 18. 、C The EMS server 2 maintains a vehicle DB (Data Base) in which all vehicle IDs are defined. In the vehicle DB, the address of the vehicle 18 indicated by the vehicle ID is defined for each vehicle ID. In this way, the CEMS server 2 can identify all vehicle IDs and the addresses of all vehicles.

[0053] Furthermore, a power device ID is assigned to each of all power devices 17 included in the power system 100. The power device ID is information for identifying the power device 17. The CEMS server 2 also holds a power device DB in which all power device IDs are defined. In the power device DB, the address of the power device 17 indicated by the power device ID is defined for each power device ID. In this way, the CEMS server 2 can identify all power device IDs and the addresses of all power devices.

[0054] The CEMS server 2 may be an aggregator server. An aggregator is an electric utility that aggregates multiple power adjustment resources to provide energy management services. The CEMS server 2 corresponds to an example of a "server" according to the present disclosure. In addition, the servers (110, 120) included in each system of the FEMS and BEMS may also be considered as "servers" according to the present disclosure.

[0055] The power receiving and transforming equipment 3 is provided at the power receiving point (interconnection point) of the microgrid MG, and is configured to be able to switch between parallel (connection) and parallel-off (disconnection) between the microgrid MG and the power grid 4. The power receiving and transforming equipment 3 includes high-voltage side (primary side) switchgear, a transformer, a protective relay, measuring instruments, and a control device, all of which are not shown. When the microgrid MG is interconnected with the power grid 4, the power receiving and transforming equipment 3 receives, for example, extra-high voltage AC power (a voltage exceeding 7000 V) from the power grid 4, steps down the received power, and supplies it to the microgrid MG.

[0056] The power system 4 is a power network constructed by power plants and power transmission and distribution facilities. In this embodiment, an electric power company serves as both a power generation business operator and a power transmission and distribution business operator. The electric power company corresponds to a general power transmission and distribution business operator and also corresponds to the manager of the power system 4, and maintains and manages the power system 4.

[0057] The electricity transmission and distribution company server 5 is a computer that belongs to an electric power company and manages the supply and demand of electricity in the electric power system 4. The electricity transmission and distribution company server 5 is also configured to be able to communicate bidirectionally with the CEMS server 2.

[0058] [Vehicle and power equipment configuration] Fig. 2 is a diagram illustrating an example of the configuration of the electric power device 17 and the vehicle 18 according to this embodiment. In the example of Fig. 2, the electric power device 17 has a communication device 181, a CPU (Central Processing Unit) 182, a memory 183, and a connector 172. The user inserts the connector 172 into an inlet 150 of the vehicle 18. The electric power device 17 charges the vehicle 18 in a state in which the connector 172 is inserted into the inlet 150 (hereinafter also referred to as an "inserted state").

[0059] The memory 183 stores a charging pattern and a power device ID, which will be described later. In this embodiment, the charging pattern of the power device 17 is also referred to as a "first charging pattern." The first charging pattern 301 is a power pattern in which the power device 17 discharges power to the vehicle 18. The first charging pattern 301 is a pattern specific to the power device 17 having the memory 183 in which the first charging pattern 301 is stored. In other words, the first charging pattern 301 of each of the power devices 17 included in the power system 100 is configured to be different from one another.

[0060] The CPU 182 executes various processes. For example, the CPU 182 charges the vehicle 18 from the connector 172 in accordance with the first charging pattern 301. The communication device 181 is also capable of communicating with the CEMS server 2.

[0061] The vehicle 18 includes an inlet 150, a charger 155, a sensor 180, a battery 115, a PCU (Power Control Unit) 120, an ECU (Electronic Control Unit) 170, a motor generator 130, a display 160, and a communication module 190.

[0062] The ECU 170 is configured with a CPU 191 and a memory 192. Various information is stored in the memory 192. For example, the memory 192 stores vehicle identification information (hereinafter referred to as vehicle ID (identification)) of the vehicle 18 equipped with the memory 192.

[0063] In an inserted state where the connector 172 is inserted into the inlet 150, the vehicle 18 is configured to receive power from the microgrid MG via the power device 17 (external charging). In addition, in the inserted state, the vehicle 18 may be configured to discharge power to the power device 17 (supply power to the microgrid MG) via the power device 17 (external discharging).

[0064] The charger 155 converts the power supplied from the inlet 150 into power that can be charged by the battery 115. The battery 115 is a power storage element configured to be capable of being charged and discharged. The battery 115 includes, for example, a secondary battery such as a lithium-ion battery or a nickel-metal hydride battery, or a storage element such as an electric double layer capacitor. The battery 115 stores power for generating a driving force for traveling by the motor generator 130. The battery 115 supplies the stored power to the PCU 120.

[0065] The PCU 120 is a drive device that drives the motor generator 130, and includes a power conversion device such as a converter and an inverter (neither of which is shown). The PCU 120 is controlled by the ECU 170, and converts DC power received from the battery 115 into AC power for driving the motor generator 130.

[0066] The PCU 120 rectifies the electric power generated by the motor generator 130 when braking the vehicle 18 to the voltage level of the battery 115 and outputs the rectified electric power to the battery 115. The battery 115 can store the generated electric power. The generated electric power is discharged externally to the microgrid MG. The display 160 also displays the electric power generated by the ECU 1 Various information is displayed by controlling 70.

[0067] The sensor 180 detects the charging power value at predetermined intervals (for example, every 0.1 seconds) while the battery is being charged by the power device 17. Every time the sensor 180 detects a charging power value, the sensor 180 outputs the charging power value to the ECU 170. Furthermore, every time the ECU 170 acquires a charging power value from the sensor 180, the ECU 170 transmits the charging power value to the CEMS server 2.

[0068] In the inserted state, vehicle 18 and power device 17 are connected not only by a power line but also by a communication line. Using this communication line, vehicle 18 and power device 17 can transmit and receive only predetermined data via a wired connection. The predetermined data is data used in both energy management control (hereinafter also referred to as "EM control"), which will be described later, and normal control. The predetermined data is, for example, data related to charging between vehicle 18 and power device 17. The predetermined data is, for example, the remaining charge of battery 115. Meanwhile, transmission and reception of specific data, which is not used in normal control but is used only in EM control, between vehicle 18 and power device 17 is not performed using a communication line. The specific data is, for example, the chargeable energy and charging energy (see FIG. 6), and the dischargeable energy and discharging energy (see FIG. 10), which will be described later. This configuration simplifies the configuration of wired communication between vehicle 18 and power device 17.

[0069] [CEMS server] Next, a description will be given of the processing of the CEMS server 2. Fig. 3 is a functional block diagram of the CEMS server 2 etc. In the example of Fig. 3, the CEMS server 2 has an acquisition unit 220 and a processing unit 222.

[0070] When charging by the power device 17 starts, each time a charging power value is detected by the sensor 180 (see FIG. 2), the vehicle 18 outputs the charging power value to the CEMS server 2. In addition, when charging by the power device 17 starts, the vehicle 18 also transmits the vehicle ID stored in the memory 192 (see FIG. 2) of the vehicle 18 to the CEMS server 2.

[0071] The acquisition unit 220 of the CEMS server 2 acquires a vehicle ID and a charging power value from the vehicle 18. The acquisition unit 220 continues acquiring the charging power value from the start of acquisition of the charging power value until a predetermined time T (e.g., 10 seconds) in FIG. 4 described below has elapsed. The acquisition unit 220 continues acquiring the charging power value over the predetermined time T and acquires a charging pattern (second charging pattern) based on the acquired multiple charging power values. The second charging pattern is a power pattern in which the vehicle 18 is charged. The second charging pattern and vehicle ID acquired by the acquisition unit 220 are output to the processing unit 222.

[0072] Furthermore, when power device 17 starts charging vehicle 18, it transmits the first charging pattern of power device 17 and the power device ID of power device 17 to the server. Acquisition unit 220 acquires the first charging pattern and the power device ID, and outputs the first charging pattern and the power device ID to processing unit 222.

[0073] The processing unit 222 compares the first and second charging patterns output from the acquisition unit 220 and determines whether the first and second charging patterns match. In this embodiment, "match" includes not only "complete match" but also "approximate match." If the processing unit 222 determines that the first and second charging patterns match, the processing unit 222 determines that the power device 17 charged using the first charging pattern has charged the vehicle 18 charged using the second charging pattern. This is also referred to as "the power device 17 and the vehicle 18 being paired." The power device 17 is also referred to as the "target power device," and the vehicle 18 is also referred to as the "target vehicle." Pairing the target power device and the target vehicle means, for example, associating the power device ID of the target power device with the vehicle ID of the target vehicle and storing the association information in the storage device 202 (e.g., RAM: Random Access Memory) of the CEMS server 2.

[0074] That is, if the first charging pattern and the second charging pattern match, processing unit 222 identifies the target power device and the target vehicle. Also, a case where the first charging pattern and the second charging pattern do not match will be described later with reference to FIG. 4. After identifying the target power device and the target vehicle, processing unit 222 causes the target power device and the target vehicle to execute EM control, which will be described later.

[0075] Fig. 4 is a diagram illustrating an example of the comparison process of processing unit 222. Fig. 4 shows a first charging pattern from power device 17A and a second charging pattern from vehicle 18A. As shown in Fig. 4, the first charging pattern is information indicating the charging power value from power device 17 until a predetermined time T has elapsed since charging of vehicle 18 began. Furthermore, the second charging pattern is information indicating the charging power value of vehicle 18 until a predetermined time T has elapsed since charging of vehicle 18 began.

[0076] Next, the comparison process between the first charging pattern and the second charging pattern will be described. For example, the processing unit 222 divides the first charging pattern and the second charging pattern into specific time intervals (e.g., one second) and compares each of the divided first charging patterns with each of the divided second charging patterns. If the comparison results in a match between the first charging pattern and the second charging pattern, the processing unit 222 identifies the power device of the first charging pattern and the vehicle of the second charging pattern as the target power device and the target vehicle, respectively. The processing unit 222 may also perform the comparison process using other methods.

[0077] FIG. 4 illustrates an example in which power device 17A and vehicle 18A are paired, and an example in which power device 17B and vehicle 18B are paired. FIG. 4 also illustrates a case in which power device 17C charges vehicle 18C, and power device 17C transmits a first charging pattern to CEMS server 2, but vehicle 18C does not transmit a second charging pattern. Vehicle 18C does not have the function to transmit a second charging pattern. Vehicle 18C is a "guest vehicle" whose vehicle ID is not registered in the CEMS server. Vehicle 18C may also have the function to transmit a second charging pattern, but the function is malfunctioning and the vehicle cannot transmit the second charging pattern. Thus, a power device 17C that is not paired is also referred to as a "non-target power device."

[0078] In the comparison process of Fig. 4, processing unit 222 waits until it acquires a second charging pattern that is identical to the first charging pattern within a waiting period (e.g., 20 seconds) from the time when it acquires a first charging pattern. If processing unit 222 acquires a second charging pattern that is identical to the first charging pattern within the specified period, it determines that power device 17 of the first charging pattern and vehicle 18 of the second charging pattern are paired. If processing unit 222 does not acquire a second charging pattern that is identical to the first charging pattern within the waiting period, it determines that power device 17 of the first charging pattern is a "non-target power device."

[0079] For example, in a conventional power system, a charging station authenticates a vehicle by comparing a charging rate transmitted from the vehicle to a server with a charging rate acquired by the charging station. However, in this conventional charging system, a vehicle is authenticated using a charging rate at a specific time. Therefore, the charging rate of a vehicle that should not actually be authenticated may coincidentally match the charging rate of a vehicle connected to the charging station. In this case, the vehicle that should not actually be authenticated may be successfully authenticated, resulting in low authentication accuracy.

[0080] In contrast, in the power system 100 of this embodiment, the vehicle 18 is authenticated based on the first charging pattern and the second charging pattern. The first charging pattern and the second charging pattern are patterns that indicate a time series of charging power values ​​from the start of charging until a predetermined time T (see FIG. 4) has elapsed. In other words, the first charging pattern and the second charging pattern are information on charging power values ​​with a time range. Therefore, it is extremely unlikely that the charging pattern of the vehicle 18, which should not actually be authenticated, will coincidentally match the charging pattern of the power supplied from the power device 17. Therefore, the accuracy of authentication of the vehicle 18 can be improved compared to a configuration that authenticates the vehicle using the battery charge rate.

[0081] Another possible configuration is to perform vehicle authentication by wireless communication between the vehicle 18 and the power device 17 that charges the vehicle 18. However, with such a configuration, when multiple vehicles 18 are being charged in a location where multiple power devices are concentrated, the wireless communication may interfere with each other, resulting in incorrect vehicle authentication. In contrast, in this embodiment, vehicle authentication is performed by the CEMS server 2. Therefore, even in a location where multiple power devices 17 are concentrated, the above-mentioned interference does not occur, and vehicle authentication can be performed appropriately.

[0082] 4 also shows a plurality of second charging patterns (target vehicle 18A and target vehicle 18B) that match each of the plurality of first charging patterns by a plurality of power devices (in the example of FIG. 4, target power device 17A and target power device 17B). The CEMS server 2 pairs the target power device charged using the first charging pattern with the target vehicle charged using the second charging pattern. That is, in the example of FIG. 4, the CEMS server 2 can perform pairing of the target power device 17A and target vehicle 18A, and pairing of the target power device 17B and target vehicle 18B (i.e., multiple pairings).

[0083] [Processing flow] 5 is a flowchart showing the flow of processing executed by the CEMS server 2, the vehicle 18, and the power device 17. When the vehicle 18 detects that it has been connected to the power device 17, in step S200, the vehicle 18 transmits a detection signal indicating that it has been detected and the vehicle ID of the vehicle 18 to the CEMS server 2. Also, in step S300, the power device 17 connected to the vehicle 18 starts charging according to the first charging pattern 301 (see FIG. 2) stored in the power device 17. Also in step S300, the power device 17 transmits the power device ID of the power device 17 and the first charging pattern of the power device 17 to the CEMS server 2.

[0084] In step S100, the CEMS server 2 receives the detection signal transmitted in step S200 and the first charging pattern transmitted in step S300. In step S100, the CEMS server 2 detects from this reception that charging of the vehicle 18 indicated by the vehicle ID transmitted in step S200 by the power device 17 indicated by the power device ID transmitted in step S300 has started.

[0085] In step S202, the vehicle 18 transmits the charging power value to the CEMS server 2 every time the sensor 180 (see FIG. 2) detects the charging power value.

[0086] Next, in step S102, the CEMS server 2 executes a comparison process (see FIG. 4). Then, it determines whether the vehicle 18 and the power device 17 are paired. If they are paired (YES in step S104), in step S106, the CEMS server 2 causes the paired target vehicle and target power device to execute charging EM control. Specifically, it transmits an EM control signal to the target vehicle and target power device. Upon receiving the EM control signal, the target vehicle and target power device recognize that charging EM control will be executed. In step S400, the target vehicle and target power device execute charging EM control.

[0087] On the other hand, if pairing has not been established (NO in step S104), in step S108, the CEMS server 2 causes the non-paired power device (non-target power device) to execute normal control, which will be described later. Specifically, the CEMS server 2 transmits a normal control signal to the non-target power device.

[0088] 6 is a flowchart showing an example of the charging EM control process. Note that the charging EM control and the discharging EM control described below are executed in a target vehicle and a target power device that are paired with each other. Therefore, the charging EM control and the discharging EM control described below are executed based on an address corresponding to the vehicle ID of the target vehicle stored in the vehicle DB and an address corresponding to the power device ID of the target power device stored in the power device DB.

[0089] First, in step S402, the CEMS server 2 acquires the chargeable energy of the target power device from the server of the xEMS to which the target power device belongs. Here, the "chargeable energy" refers to the amount of energy that the target power device can charge (the amount of energy that is permitted to be charged) for the target vehicle. The chargeable energy is calculated by the server of the xEMS to which the target power device belongs (hereinafter also referred to as the "target server"). For example, if the target power device belongs to a FEMS, the target server is the FEMS server 110 (see FIG. 1). If the target power device belongs to a BEMS, the target server is the BEMS server 120 (see FIG. 1).

[0090] The target server also calculates the chargeable energy amount based on a predetermined algorithm using the total energy supplied from the MG (power grid) to the xEMS to which the target server belongs and the energy required by the loads 11A and 12A (see FIG. 1) of the facility (such as the factory 11 or building 12 in FIG. 1) of the xEMS. The algorithm is defined so that the greater the energy required by the loads 11A and 12A, the smaller the amount of energy that can be charged by the target power device. This allows the chargeable energy amount to be reduced even when the energy required by the loads 11A and 12A is large, thereby preventing power shortages in the loads 11A and 12A. The algorithm may also be defined so that the smaller the energy required by the loads 11A and 12A, the larger the amount of energy that can be charged by the target power device. This allows a larger amount of energy to be supplied to the vehicle 18 when the energy required by the loads 11A and 12A is small.

[0091] Furthermore, in step S404, the target vehicle calculates the amount of chargeable energy and transmits it to the CEMS server 2. The ECU 170 (see FIG. 2) of the target vehicle calculates the amount of chargeable energy based on a predetermined calculation. The predetermined calculation is, for example, a calculation of subtracting the current capacity from the full charge capacity of the battery 115. Note that, as a modified example, the target vehicle may transmit the amount of chargeable energy to the target power device, and the target power device may transmit the amount of chargeable energy to the CEMS server 2.

[0092] The target vehicle transmits the chargeable energy amount to the CEMS server 2. In step S406, the CEMS server 2 determines the amount of charge energy of the target power device based on the chargeable energy amount acquired in step S402 and the chargeable energy amount transmitted from the target vehicle in step S404. For example, in step S406, the CEMS S The server 2 determines the smaller of the chargeable energy amount acquired in step S402 and the chargeable energy amount transmitted from the target vehicle in step S404 as the amount of charging energy for the target power device. Then, the CEMS server 2 transmits information indicating the determined amount of charging energy to the target vehicle and the target power device.

[0093] In step S408, ECU 170 of the target vehicle displays the amount of charging energy transmitted in step S406 on display 160 (see FIG. 2). This display allows the occupants of the target vehicle to recognize the amount of charging energy.

[0094] In step S410, the target power device continues charging the target vehicle with the amount of charging energy transmitted in step S406. "Continuing charging" means that the target power device switches from the first charging pattern in step S300 to the normal charging pattern and continues charging until charging with the amount of charging energy transmitted in step S406 is completed.

[0095] In this way, in the charging EM control, even if the configuration does not allow communication between the target vehicle and the target power device, the CEMS server 2 can transmit the amount of charging energy determined by the charging EM control to the target power device and the target vehicle. Therefore, the CEMS server 2 can make the target power device and the target vehicle aware of the amount of charging energy.

[0096] When the charging EM control of FIG. 6 ends, the process returns to FIG. 5, and the process of FIG. 5 ends. Furthermore, for a non-target power device (e.g., power device 17C shown in FIG. 4) for which a NO determination has been made in step S104 of FIG. 5, the CEMS server 2 executes normal control. Normal control is different from charging EM control. That is, normal control is control that prevents the chargeable energy of a non-target power device from changing depending on the amount of power required by the load. For example, normal control is control that charges a vehicle (e.g., visitor vehicle 18C shown in FIG. 4) connected to the non-target power device with the same amount of charge as the chargeable energy calculated for that vehicle. In this way, even if a non-paired visitor vehicle 18C (see FIG. 4) is charged by the power device 17C, the non-target vehicle can be appropriately charged.

[0097] Second Embodiment In the first embodiment described above, the configuration has been described in which the power device 17 stores the first charging pattern 301 unique to the power device 17 (see FIG. 2). In the second embodiment, the CEMS server 2 generates a first charging pattern unique to the power device 17 and transmits the first charging pattern to the power device 17. Then, the power device 17 charges the vehicle 18 using the first charging pattern.

[0098] 7 is a flowchart showing the flow of processing executed by the CEMS server 2, the vehicle 18, and the power device 17 of the second embodiment. When the power device 17 detects connection with the vehicle 18, it transmits the power device ID of the power device 17 to the CEMS server 2 in step S310.

[0099] In step S120, upon receiving this power device ID, the CEMS server 2 generates a first charging pattern. Here, this first charging pattern is a charging pattern different from the first charging pattern in use. The "first charging pattern in use" is a first charging pattern that exists from when it is generated in step S120 to when it is deleted in step S103, which will be described later. Therefore, in the period from when charging by the power device 17 starts to when the comparison process in step S102 ends, the first charging pattern generated in step S120 is different from the first charging patterns of all the other power devices.

[0100] In step S120, the CEMS server 2 stores the generated data of the first charging pattern in a memory (eg, RAM) of the CEMS server 2, and transmits the first charging pattern to the power device 17 that transmitted the power device ID.

[0101] Upon receiving the first charging pattern from the CEMS server 2, the power device 17 starts charging according to the first charging pattern in step S320. The power device 17 transmits a start signal indicating that charging has started to the CEMS server 2. In step S100, upon receiving the start signal, the CEMS server 2 detects that charging has started by the power device 17 indicated by the power device ID transmitted in step S310 for the vehicle 18 indicated by the vehicle ID transmitted in step S200.

[0102] In step S102, the CEMS server 2 compares the second charging pattern with the first charging pattern transmitted to the power device 17 in step S120. If the first charging pattern and the second charging pattern match, the CEMS server 2 identifies the target power device and the target vehicle (see FIG. 4).

[0103] Furthermore, in step S103, the CEMS server 2 erases the first charging pattern used in the comparison process. "Erasing the first charging pattern" means "erasing the data of the first charging pattern stored in the RAM of the CEMS server 2." Furthermore, in step S120, the CEMS server 2 generates a first charging pattern that is different from any of the at least one first charging patterns stored in this RAM. The processing after the processing of step S103 is the same as that in FIG. 5.

[0104] In the CEMS server 2 of the second embodiment, a first charging pattern is generated in step S120 (see step S120 in FIG. 7), and after the comparison process is completed, the first charging pattern is deleted in step S103. In this way, the CEMS server 2 deletes the first charging pattern after pairing the target electric power device and the target vehicle, so that the number of first charging patterns is not excessively increased. 2 In the embodiment, the CEMS server 2 may be configured not to need to perform processing such as generating the first charging pattern.

[0105] The first and second embodiments have in common that the first charging patterns of all the other power devices other than the power device 17 are all different during the period from when charging by the power device 17 starts to when the comparison process ends.

[0106] <Third embodiment> In the above-described first and second embodiments, a configuration has been described in which the power device 17 charges the vehicle 18. In the third embodiment, a configuration in which the vehicle 18 discharges the power device 17 will be described.

[0107] In the third embodiment, each vehicle 18 stores a discharge pattern (first discharge pattern) specific to the vehicle 18 in memory 192 (see FIG. 2). The first discharge pattern is a power pattern in which the vehicle 18 discharges. The first discharge pattern is a pattern that indicates the discharge power value of the vehicle 18 from the start of discharge until a predetermined time T has elapsed. The vehicle 18 discharges to the power device 17 according to the first discharge pattern.

[0108] 8 is a functional block diagram of the CEMS server 2 and the like. When the vehicle 18 starts discharging to the power device 17, the vehicle 18 transmits a first discharging pattern of the vehicle 18 and the vehicle ID of the vehicle 18 to the CEMS server 2. The acquisition unit 220 acquires the first discharging pattern and the vehicle ID, and outputs the first discharging pattern and the vehicle ID to the processing unit 222.

[0109] Furthermore, the power device 17 has a discharge sensor (not shown), and when the vehicle 18 starts discharging, each time the discharge sensor detects a discharge power value, the power device 17 outputs the discharge power value to the CEMS server 2. Furthermore, the power device 17 also transmits the power device ID stored in the memory 192 (see FIG. 2) of the power device 17 to the CEMS server 2 when the vehicle 18 starts discharging.

[0110] The acquisition unit 220 of the CEMS server 2 acquires the power device ID and the discharge power value from the power device 17. Then, the acquisition unit 220 continues acquiring the discharge power value from the start of acquisition of the discharge power value until a predetermined time T (for example, 10 seconds) has elapsed. The acquisition unit 220 continues acquiring the discharge power value over the predetermined time T and acquires a discharge pattern (second discharge pattern) based on the acquired multiple discharge power values. The second discharge pattern is a power pattern in which power is supplied to the power device 17. The second discharge pattern and power device ID acquired by the acquisition unit 220 are output to the processing unit 222.

[0111] The processing unit 222 compares the first and second discharge patterns output from the acquisition unit 220 and determines whether the first and second discharge patterns match. Note that the comparison in this embodiment is equivalent to changing the "first charging pattern" to the "second discharging pattern" in FIG. 4 and changing the "second charging pattern" to the "first discharging pattern." Hereinafter, FIG. 4 with the content changed in this way will also be referred to as "changed FIG. 4."

[0112] If the processing unit 222 determines that the first discharge pattern and the second discharge pattern match, the processing unit 222 determines that the vehicle 18 that discharged in the first discharge pattern discharged to the power device 17 that discharged in the second discharge pattern. This is also referred to as "the vehicle 18 and the power device 17 being paired." The vehicle 18 is also referred to as the "target power device," and the vehicle is also referred to as the "target vehicle."

[0113] That is, if the first discharge pattern and the second discharge pattern match, the processing unit 222 identifies the target power device and the target vehicle. After identifying the target power device and the target vehicle, the processing unit 222 causes the target power device to execute the discharge EM control described below. As described above, with the power system of the third embodiment, vehicle authentication can be performed with high accuracy even when discharging from the vehicle 18 to the power device 17.

[0114] Furthermore, this embodiment discloses a plurality of second discharge patterns (target power device 17A and target power device 17B) that match the plurality of first discharge patterns of a plurality of vehicles (for example, target vehicle 18A and target vehicle 18B in the example of FIG. 4 after the above-described modification). The CEMS server 2 pairs a target vehicle that discharged in the first discharge pattern with a target power device that received power in the second discharge pattern. In other words, the CEMS server 2 can perform pairing of target power device 17A and target vehicle 18A, and pairing of target power device 17B and target vehicle 18B (i.e., multiple pairings).

[0115] [Processing flow] 9 is a flowchart showing the flow of processing executed by the CEMS server 2, the power device 17, and the vehicle 18 in the third embodiment. When it is detected that the vehicle 18 is connected to the power device 17, the processing of step S200 is executed. Furthermore, in step S310, the power device 17 transmits the power device ID to the CEMS server 2.

[0116] Also, in step S220, the vehicle 18 discharges to the power device 17 in the first discharge pattern stored in the vehicle 18. Also, in step S220, the vehicle 18 transmits the first discharge pattern of the vehicle to the CEMS server 2.

[0117] In step S120, the CEMS server 2 receives the detection signal transmitted in step S200 and the first discharge pattern transmitted in step S310. In step S120, the CEMS server 2 detects from this reception that the vehicle 18 indicated by the vehicle ID transmitted in step S200 has started discharging the power device 17 indicated by the power device ID transmitted in step S310.

[0118] In step S340, the power device 17 the above Each time the discharge sensor detects a discharge power value, the discharge power value is transmitted to the CEMS server 2.

[0119] Next, in step S102, the CEMS server 2 executes a comparison process. If the first discharge pattern and the second discharge pattern match, the CEMS server 2 identifies the target power device and the target vehicle. In step S106, the CEMS server 2 causes the paired target vehicle and target power device to execute discharge EM control. In step S500, the target vehicle and target power device execute discharge EM control. On the other hand, if the first discharge pattern and the second discharge pattern do not match (NO in step S104), in step S110, the CEMS server 2 causes the non-paired vehicle (non-target vehicle) to execute normal control, which will be described later. Specifically, the CEMS server 2 transmits a normal control signal to the non-target vehicle.

[0120] 10 is a flowchart showing an example of the discharge EM control process. First, in step S502, the CEMS server 2 acquires the dischargeable energy of the target power device from the target server to which the target power device belongs. Here, the "dischargeable energy" is the amount of energy that the target vehicle can discharge to the target power device.

[0121] The target server also calculates the amount of dischargeable power based on a predetermined algorithm using the total amount of power supplied from the MG (power grid) to the xEMS to which the target server belongs and the amount of power required by the loads 11A and 12A (see FIG. 1) of the facility of the xEMS (such as the factory 11 or building 12 in FIG. 1). The algorithm is defined so that the greater the amount of power required by the loads 11A and 12A, the greater the amount of power that can be discharged by the target power device. This allows the amount of dischargeable power to be increased when the amount of power required by the loads 11A and 12A is large, thereby preventing power shortages in the loads 11A and 12A. The algorithm may also be defined so that the smaller the amount of power required by the loads 11A and 12A, the smaller the amount of power that can be discharged by the target power device. This allows the amount of power reduction in the vehicle 18 to be reduced when the amount of power required by the loads 11A and 12A is small.

[0122] In step S504, the target vehicle calculates the amount of dischargeable energy and transmits it to the CEMS server 2. The ECU 170 (see FIG. 2) of the target vehicle calculates the amount of dischargeable energy based on the current capacity of the battery 115. As a modified example, the target vehicle may transmit the amount of dischargeable energy to the target power device, and the target power device may transmit the amount of dischargeable energy to the CEMS server 2.

[0123] The target vehicle transmits the amount of dischargeable energy to the CEMS server 2. In step S506, the CEMS server 2 calculates the amount of dischargeable energy to be discharged to the target power device based on the amount of dischargeable energy acquired in step S502 and the amount of dischargeable energy transmitted from the target vehicle in step S504. For example, in step S506, the CEEMS server 2 identifies the smaller amount of dischargeable energy of the amount of dischargeable energy acquired in step S502 or the amount of dischargeable energy transmitted from the target vehicle in step S504 as the amount of dischargeable energy of the target vehicle. Then, the CEMS server 2 transmits information indicating the identified amount of dischargeable energy to the target vehicle and the target power device.

[0124] The target power device recognizes the amount of discharged power transmitted in step S506. Furthermore, in step S508, ECU 170 of the target vehicle displays the amount of discharged power transmitted in step S506 on display 160 (see FIG. 2). This display allows the occupants of the target vehicle to recognize the amount of discharged power.

[0125] Furthermore, in step S508, the target power device continues discharging to the target vehicle with the amount of discharge power transmitted in step S506. "Continuing discharging" means switching from the first discharge pattern in step S220 to the normal pattern and continuing discharging until the amount of discharge power transmitted in step S506 is completed.

[0126] In this way, in the discharge EM control, even if the configuration does not allow communication between the target vehicle and the target power device, the CEMS server 2 can transmit the discharge power amount determined by the discharge EM control to the target power device and the target vehicle. Therefore, the CEMS server 2 can make the target power device and the target vehicle aware of the discharge power amount.

[0127] When the discharge EM control of FIG. 10 ends, the process returns to FIG. 9, and the process of FIG. 9 ends. Furthermore, for non-target vehicles for which a NO determination has been made in step S104 of FIG. 9, the CEMS server 2 executes normal control. Normal control is different from discharge EM control. That is, normal control is control that prevents the amount of dischargeable power by the non-target vehicle from changing depending on the amount of power required by the load. For example, normal control is control that allows the non-target vehicle to discharge the amount of dischargeable power calculated for the non-target vehicle. In this way, even if the non-target vehicle discharges power to a non-target power device that is not paired, the non-target vehicle can be allowed to discharge appropriately.

[0128] <Fourth embodiment> In the third embodiment described above, the vehicle 18 stores a first discharging pattern specific to the vehicle 18. In the fourth embodiment, the CEMS server 2 generates a first discharging pattern for the vehicle 18 and transmits the first discharging pattern to the vehicle 18. Then, the vehicle 18 discharges the power device 17 using the first discharging pattern.

[0129] FIG. 11 is a flowchart showing the flow of processing executed by the CEMS server 2, the power device 17, and the vehicle 18 in the fourth embodiment.

[0130] In step S140, upon receiving the vehicle ID transmitted in step S200, the CEMS server 2 generates a first discharge pattern. Here, this first discharge pattern is a discharge pattern different from the first discharge pattern being used. The "first discharge pattern being used" is a first discharge pattern that exists from the time it is generated in step S140 to the time it is deleted in step S123, which will be described later. Therefore, in the period from the time discharge by the power device 17 starts to the time the comparison process in step S102 ends, the first discharge pattern generated in step S120 is different from the first discharge patterns of all the other power devices.

[0131] Then, in step S140, the CEMS server 2 stores the generated first discharge pattern in the RAM of the CEMS server 2, and transmits it to the vehicle 18 that transmitted the vehicle ID.

[0132] In step S240, the vehicle 18 that has received the first discharge pattern from the CEMS server 2 starts discharging according to the first discharge pattern. The vehicle 18 transmits a start signal indicating that the discharge has started to the CEMS server 2. In step S120, the CEMS server 2 detects, upon receiving the start signal, that the vehicle 18 indicated by the vehicle ID transmitted in step S200 has started discharging to the power device 17 indicated by the power device ID transmitted in step S310.

[0133] In addition, in step S340, the power device 17 transmits the discharge power value to the CEMS server 2 every time the power device 17 detects the discharge power value.

[0134] In step S102, the CEMS server 2 compares the second discharge pattern with the first discharge pattern transmitted to the vehicle 18 in step S140. If the first discharge pattern and the second discharge pattern match, the CEMS server 2 identifies the target power device and the target vehicle.

[0135] Furthermore, in step S123, the CEMS server 2 erases the first discharge pattern used in the comparison process. "Erasing the first discharge pattern" means "erasing the data of the first discharge pattern stored in the RAM of the CEMS server 2." Furthermore, in step S120, the CEMS server 2 generates a first discharge pattern that is different from any of the at least one first discharge pattern stored in this RAM. The processing after the processing of step S123 is the same as that in FIG. 9.

[0136] In the CEMS server 2 of the fourth embodiment, a first discharge pattern is generated in step S120 (see step S120 in FIG. 11), and after the comparison process is completed, the first discharge pattern is erased in step S123. In this way, the CEMS server 2 erases the first discharge pattern after pairing the target power device and the target vehicle, thereby preventing the number of first discharge patterns from increasing excessively. Furthermore, in the third embodiment, the CEMS server 2 can be made to not need to perform a process such as generating a first discharge pattern.

[0137] The first and second embodiments have in common that the first discharge patterns of all vehicles other than vehicle 18 are different from the time when discharge by vehicle 18 begins until the time when the comparison process ends.

[0138] <Other embodiments> (1) In the above embodiment, the predetermined period defined in the charging pattern and the discharging pattern is a predetermined time T (see FIG. 4, etc.). However, the predetermined period may be a predetermined amount of power. For example, the predetermined amount of power for the charging pattern may be the total amount of charged power. Also, the predetermined amount of power for the discharging pattern may be the total amount of discharged power.

[0139] (2) In the first and second embodiments, charging of the vehicle 18 by the power device 17 is described, and in the third and fourth embodiments, discharging of the power device 17 by the vehicle 18 is described. However, the power device 17 may be configured to be capable of both charging the vehicle 18 by the power device 17 and discharging the power device 17 by the vehicle 18.

[0140] (3) Furthermore, the processing of the “server” in the present disclosure may be performed only by the CEMS server 2, only by the xEMS server, or by both the CEMS server 2 and the xEMS server.

[0141] (4) In the first embodiment, a configuration has been described in which each power device 17 stores a unique first charging pattern, and the power device 17 transmits the first charging pattern to the CEMS server 2. However, the CEMS server 2 may store the first charging patterns of all of the power devices 17. If such a configuration is adopted, the process of transmitting the first charging pattern from the power device 17 to the CEMS server 2 can be eliminated. In addition, in the third embodiment, a configuration has been described in which each vehicle 18 stores a unique first discharging pattern, and the vehicle 18 transmits the first discharging pattern to the CEMS server 2. However, the CEMS server 2 may store the first discharging patterns of all of the vehicles 18. If such a configuration is adopted, the process of transmitting the first discharging pattern from the vehicle 18 to the CEMS server 2 can be eliminated.

[0142] (5) In the above embodiment, an example is disclosed in which one connector 172 is installed in one power device 17. However, a configuration in which multiple connectors 172 are installed in one power device 17 may be adopted. When such a configuration is adopted, the multiple connectors 172 function as multiple power devices 17.

[0143] (6) In the first and second embodiments, the vehicle 18 transmits a charge power value to the CEMS server 2 each time it detects it, and the CEMS server 2 acquires a second charge pattern based on the charge power value. However, the vehicle 18 itself may generate a second charge pattern based on the charge power value and transmit the second charge pattern to the CEMS server 2. In addition, in the third and fourth embodiments, the power device 17 transmits a discharge power value to the CEMS server 2 each time it detects it, and the CEMS server 2 acquires a second discharge pattern based on the discharge power value. However, the power device 17 itself may generate a second discharge pattern based on the discharge power value and transmit the second discharge pattern to the CEMS server 2.

[0144] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0145] 2 CEMS server, 3 power receiving and transforming equipment, power system, 5 power transmission and distribution company server, 11 factory, 12 building, 11A, 12A load, 14 generator, 15 naturally fluctuating power source, 16 power storage system, 17 power device, 18 vehicle, 19 heat storage system, 100 power system, 115 battery, 130 motor generator, 150 inlet, 155 charger, 160 display, 172 connector, 180 sensor, 201 control device, 202 storage device, 220 acquisition unit, 222 processing unit, 301 first charging pattern.

Claims

1. a server, at least one power device, and at least one vehicle; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; the server generates a first charging pattern different from the first charging pattern being used when starting charging by the power device, and transmits the first charging pattern to the power device; the power device charges the vehicle in accordance with the first charging pattern transmitted by the server; The server When the first charging pattern transmitted to the power device matches a second charging pattern, which is a power pattern for charging the vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing the target power device charged using the first charging pattern with the target vehicle charged using the second charging pattern; The power system erases the generated first charging pattern after the target power device and the target vehicle are paired.

2. A system comprising: a server; at least one power device; at least one vehicle; and a load that consumes power; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; The server When the first charging pattern matches a second charging pattern, which is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; Identifying a non-target power device to be charged with a first charging pattern that does not match the second charging pattern; The power system controls the non-target power device in such a way that the amount of chargeable power by the non-target power device does not change depending on the requested amount of power.

3. A system comprising: a server; at least one power device; at least one vehicle; and a load that consumes power; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; The server When the first charging pattern matches a second charging pattern, which is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; Obtaining the chargeable energy of the target power device; The target vehicle or the target power device transmits the chargeable energy amount of the target vehicle to the server; The server determines the amount of charging power based on the amount of chargeable power of the target power device and the amount of chargeable power of the target vehicle, and transmits information indicating the amount of charging power to the target power device and the target vehicle.

4. the at least one power device includes a plurality of power devices; the at least one vehicle includes a plurality of vehicles; the plurality of power devices charge the vehicle using the plurality of first charging patterns, each of which is different from the others; the plurality of vehicles are charged according to the plurality of second charging patterns, each of which is different from the others; The power system according to any one of claims 1 to 3, wherein the server pairs the target power device charged in the first charging pattern with the target vehicle charged in the second charging pattern, for each of the plurality of second charging patterns that match the plurality of first charging patterns.

5. a server, at least one power device, and at least one vehicle; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; the server generates a first discharge pattern different from the first discharge pattern being used when starting discharge by the vehicle and transmits the first discharge pattern to the vehicle; the vehicle discharges the electric power device in accordance with the first discharge pattern transmitted by the server; The server When the first discharge pattern transmitted to the vehicle matches a second discharge pattern, the second discharge pattern being a power pattern to which the power device is supplied and indicating a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; The power system erases the generated first discharge pattern after the target power device and the target vehicle are paired.

6. A system comprising: a server; at least one power device; at least one vehicle; and a load that consumes power; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; The server When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the amount of power discharged by the target vehicle increases as the amount of power required by the load increases; Identifying a non-target vehicle that discharges in a first discharge pattern that does not match the second discharge pattern; The power system controls the non-target vehicle so that the amount of dischargeable power by the non-target vehicle does not change depending on the requested amount of power.

7. A system comprising: a server; at least one power device; at least one vehicle; and a load that consumes power; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; The server When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the amount of power discharged by the target vehicle increases as the amount of power required by the load increases; Acquire the amount of power that can be discharged to the target power device; The target vehicle or the target power device transmits the dischargeable power amount of the target vehicle to the server; The server determines the amount of discharged power based on the amount of dischargeable power of the target power device and the amount of dischargeable power of the target vehicle, and transmits information indicating the amount of discharged power to the target power device and the target vehicle.

8. the at least one power device includes a plurality of power devices; the at least one vehicle includes a plurality of vehicles; the plurality of vehicles discharge to the power device in the plurality of first discharge patterns, each of which is different from the others; the plurality of power devices are respectively supplied with power according to the plurality of second discharge patterns different from each other; The power system according to any one of claims 5 to 7, wherein the server pairs the target vehicle that discharged in the first discharge pattern with the target power device that was supplied with power in the second discharge pattern, for each of the plurality of second discharge patterns that match the plurality of first discharge patterns.

9. an interface for communicating with at least one power device and at least one vehicle; a processor; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; the processor generates a first charging pattern different from the first charging pattern being used when starting charging by the power device and transmits the first charging pattern to the power device; the power device charges the vehicle with the transmitted first charging pattern; The processor: When the first charging pattern transmitted to the power device matches a second charging pattern, which is a power pattern for charging the vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing the target power device charged using the first charging pattern with the target vehicle charged using the second charging pattern; The server erases the generated first charging pattern after the target electric power device and the target vehicle are paired.

10. An interface for communicating with at least one power device, at least one vehicle, and a load consuming power; a processor; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; The processor: When the first charging pattern matches a second charging pattern, which is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; Identifying a non-target power device to be charged with a first charging pattern that does not match the second charging pattern; The server controls the non-target power device in such a way that the chargeable energy amount of the non-target power device does not change depending on the requested energy amount.

11. A server, an interface for communicating with at least one power device, at least one vehicle, and a load consuming power; a processor; the power device charges the vehicle with a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging until a predetermined period has elapsed; The processor: When the first charging pattern matches a second charging pattern, which is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing a target power device charged using the first charging pattern with a target vehicle charged using the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; Obtaining the chargeable energy of the target power device; The target vehicle or the target power device transmits the chargeable energy amount of the target vehicle to the server; The processor determines the amount of charging power based on the amount of chargeable power of the target power device and the amount of chargeable power of the target vehicle, and transmits information indicating the amount of charging power to the target power device and the target vehicle.

12. an interface for communicating with at least one power device and at least one vehicle; a processor; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; the processor generates a first discharge pattern different from the first discharge pattern being used when initiating discharge by the vehicle and transmits the first discharge pattern to the vehicle; The vehicle discharges the power device in accordance with the transmitted first discharge pattern; The processor: When the first discharge pattern transmitted to the vehicle matches a second discharge pattern, the second discharge pattern being a power pattern to which the power device is supplied and indicating a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; The server erases the generated first discharge pattern after pairing the target power device with the target vehicle.

13. An interface for communicating with at least one power device, at least one vehicle, and a load consuming power; a processor; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; The processor: When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the amount of power discharged by the target vehicle increases as the amount of power required by the load increases; Identifying a non-target vehicle that discharges in a first discharge pattern that does not match the second discharge pattern; The server controls the non-target vehicle so that the dischargeable amount of power by the non-target vehicle does not change depending on the requested amount of power.

14. A server, an interface for communicating with at least one power device, at least one vehicle, and a load consuming power; a processor; the vehicle discharges to the power device in a first discharge pattern, which is a power pattern in which the vehicle discharges and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; The processor: When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the amount of power discharged by the target vehicle increases as the amount of power required by the load increases; Acquire the amount of power that can be discharged to the target power device; The target vehicle or the target power device transmits the dischargeable power amount of the target vehicle to the server; The processor determines the amount of discharged power based on the amount of dischargeable power of the target power device and the amount of dischargeable power of the target vehicle, and transmits information indicating the amount of discharged power to the target power device and the target vehicle.

15. 1. A method for controlling power between at least one power device and at least one vehicle, comprising: acquiring a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging the vehicle by the power device until a predetermined period has elapsed; When starting charging by the power device, generating a first charging pattern different from the first charging pattern being used and transmitting the first charging pattern to the power device; causing the power device to charge the vehicle with the transmitted first charging pattern; When the first charging pattern transmitted to the power device matches a second charging pattern, which is a power pattern for charging the vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, pairing the target power device charged with the first charging pattern with the target vehicle charged with the second charging pattern; and erasing the generated first charging pattern after pairing the target power device with the target vehicle.

16. A power control method for at least one power device, at least one vehicle, and a load that consumes power, comprising: acquiring a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging the vehicle by the power device until a predetermined period has elapsed; When the first charging pattern matches a second charging pattern, the second charging pattern is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, and the target power device charged according to the first charging pattern is paired with the target vehicle charged according to the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; identifying a non-target power device to be charged with a first charging pattern that does not match the second charging pattern; and controlling the non-target power device so that the amount of chargeable power by the non-target power device does not change depending on the amount of requested power.

17. A power control method for at least one power device, at least one vehicle, and a load that consumes power, comprising: acquiring a first charging pattern, which is a power pattern in which the power device discharges and indicates a charging power value from the start of charging the vehicle by the power device until a predetermined period has elapsed; When the first charging pattern matches a second charging pattern, the second charging pattern is a power pattern for charging a vehicle and indicates a charging power value from the start of charging by the power device until the predetermined period has elapsed, and the target power device charged according to the first charging pattern is paired with the target vehicle charged according to the second charging pattern; controlling the target power device so that the amount of power charged by the target power device decreases as the amount of power required by the load increases; Obtaining the chargeable energy of the target power device; causing the target vehicle or the target power device to transmit the chargeable energy amount of the target vehicle; A power control method comprising: determining the amount of charging power based on the amount of chargeable power of the target power device and the amount of chargeable power of the target vehicle; and transmitting information indicating the amount of charging power to the target power device and the target vehicle.

18. 1. A method for controlling power between at least one power device and at least one vehicle, comprising: acquiring a first discharge pattern that is a power pattern discharged by the vehicle and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; When starting discharge by the vehicle, generating a first discharge pattern different from the first discharge pattern being used and transmitting the first discharge pattern to the vehicle; causing the vehicle to discharge the power device in the first discharge pattern transmitted; When the first discharge pattern transmitted to the vehicle matches a second discharge pattern, the second discharge pattern being a power pattern to which the power device is supplied and indicating a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; and erasing the generated first discharge pattern after pairing the target power device with the target vehicle.

19. A power control method for at least one power device, at least one vehicle, and a load that consumes power, comprising: acquiring a first discharge pattern that is a power pattern discharged by the vehicle and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the larger the amount of power required by the load, the larger the amount of power discharged by the target vehicle; Identifying a non-target vehicle that discharges in a first discharge pattern that does not match the second discharge pattern; and controlling the non-target vehicle so that the amount of dischargeable power by the non-target vehicle does not change depending on the requested amount of power.

20. A power control method for at least one power device, at least one vehicle, and a load that consumes power, comprising: acquiring a first discharge pattern that is a power pattern discharged by the vehicle and indicates a discharge power value from the start of discharge until a predetermined period has elapsed; When the first discharge pattern matches a second discharge pattern, which is a power pattern to which the power device is supplied and indicates a discharge power value from the start of discharge by the vehicle until the predetermined period has elapsed, pairing the target vehicle that discharged according to the first discharge pattern with the target power device that discharged according to the second discharge pattern; controlling the target vehicle so that the larger the amount of power required by the load, the larger the amount of power discharged by the target vehicle; acquiring an amount of power that can be discharged to the target power device; causing the target vehicle or the target power device to transmit the dischargeable power amount of the target vehicle; A power control method comprising: determining the amount of discharged power based on the amount of dischargeable power of the target power device and the amount of dischargeable power of the target vehicle; and transmitting information indicating the amount of discharged power to the target power device and the target vehicle.

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